Editing Battle of Psi Serpentis

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****{{UNSCShip|Agincourt}}

** 55 battleships

***Merchant vessels

****[[CPV-class heavy destroyer|CPV-class heavy destroyers]]

****[[CRS-class light cruiser|CRS-class light cruisers]]

****[[CCS-class battlecruiser|CCS-class battlecruisers]]

{{Quote|Listen to me, [[Covenant]]. I am Vice Admiral [[Preston Jeremiah Cole|Preston J. Cole]] commanding the human flagship, [[UNSC Everest|''Everest'']]. You claim to be the holy and glorious inheritors of the universe? I spit on your so-called holiness. You dare judge us unfit? After I have personally sent more than three hundred of your vainglorious ships to hell? After kicking your collective butts off Harvest - not once - but twice? From where I sit, we are the worthy inheritors. You think otherwise, you can come and try to prove me wrong.|One of Admiral Cole's last known transmissions directed to the Covenant fleet above Viperidae.<ref name="HE"/>}}

The '''Battle of Psi Serpentis''' was a battle fought toward the latter half of the [[Human-Covenant War]] in [[2543]] and had become colloquially known as [[Admiral Cole's Last Stand]] due to the presumed death of [[Admiral]] [[Preston Jeremiah Cole|Preston Cole]]. The actions of Admiral Cole and [[battle Group India|his fleet]] in the battle rival the accomplishments made by most other heroes of the war.<ref name="HE">'''[[Halo: Evolutions - Essential Tales of the Halo Universe|Halo: Evolutions]]''', "[[The Impossible Life and the Possible Death of Preston J. Cole]]", ''pages 472-485''</ref>

Cole spent a great deal of time preparing for the battle. The Admiral ordered massive amounts of Titanium-A plating for his flagship, {{UNSCShip|Everest}}; acquired the {{UNSCShip|Io}} which had previously been damaged in the [[Battle of 18 Scorpii]]; and did extensive theoretical studies of star density and slipspace travel. The purpose of these activities were unknown to Cole's superiors and the UNSC at-large at the time.<ref name="HE"/> Cole also procured massive amounts of ordnance for the conflict, including 105 [[Shiva-class nuclear missile|Shiva-class nuclear missiles]], 2400 [[Archer missile|Archer missiles]] and 45,000 blocks of ammunition for the ''Everest'''s [[M810 Helix point defense gun|M810 point defense network]].<ref name="HE"/> In addition to these actions, the [[UNSC prowler|prowler]] {{UNSCShip|Wink of an Eye}} prepared the battlefield in the [[Psi Serpentis system|Psi Serpentis System]] for a week by observing the [[Covenant]]'s activities in the system.<ref name="HE"/> Finally, Cole appears to have contacted his former lover and [[Insurrectionist]] [[Lyrenne Castilla]], who had recently reappeared at the Battle of 18 Scorpii, in an attempt to coordinate independent participation in the battle.

[[Battle Group India|Battlegroup India]] jumped into the Psi Serpentis system as a single unit. The resulting wave of radiation rippled through the system and encompassed the three nearest planets. This was a clear warning sign to the waiting Covenant fleet, which swiftly moved to engage Cole's forces. The UNSC battlegroup then performed a previously unheard of in-system jump to the gas giant [[Viperidae]], assisted by [[Slipspace guidance beacon]]s dropped by ''Wink of an Eye''. A dozen ships limped behind the main task force due to the random inaccuracies of UNSC [[Shaw-Fujikawa Translight Engine|trans-light engines]] and many were picked off by the Covenant, however this small distraction allowed Cole's force to regroup. As the Covenant fleet bore down on Battlegroup India, Cole divided the fleet into two groups, the starboard most of which arced around Viperidae to cut into the pursuing Covenant fleet. The majority of Cole's fleet was able to bring their guns to bear on a now divided Covenant fleet. Cole's forces inflicted heavy damage on the hundred or so Covenant vessels, destroying 23 enemy vessels while losing a third of the fleet.<ref name="HE"/>

The Covenant fleet regrouped and pursued Cole's fleet until a group of Insurrectionist vessels emerged from slipspace. Led by the heavily modified ''[[Bellicose]]'', they opened fire on the Covenant, losing a quarter of their number. Once they attacked they smashed through the Covenant formation and withdrew from the system. Cole himself moved ''Everest'' deeper into Viperidae's [[Gravity well (physics)|gravity well]] while the UNSC fleet proceeded to disengage. The Admiral then issued a broadcast to the pursuing Covenant ships, boasting of his own achievements while scoffing at their claim to righteousness. Sensing and accepting the challenge, the Covenant moved to attack ''Everest'', but their plasma was deflected by the magnetosphere of the planet.<ref name="HE"/>

Cole moved ''Everest'' past the point of no return from Viperidae's gravity well, and launched a barrage of missiles at the lead ship in the Covenant formation. Nuclear fire destroyed the ship but there was little damage done to the rest of the fleet. While the Covenant fleet was distracted by the barrage, Cole had launched one hundred Shiva nuclear warheads into Viperidae's unstable core. The resulting ignition caused the planet to go [[Wikipedia:nova|nova]], undergoing stellar fusion and briefly becoming a [[Wikipedia:Brown dwarf|brown dwarf]]. The resulting shockwave obliterated all of the Covenant ships, reduced Viperidae to a smoldering rock, and presumably destroyed ''Everest''.<ref name="HE"/>

This has left Admiral Cole's death subject to much speculation, and [[Artificial Intelligence#Human A.I.s|AIs]] under [[Codename: SURGEON]]'s command calculated that there was an 89.7% chance that Cole had indeed escaped in an in-atmosphere slipspace jump.<ref name="HE"/> Either way, Cole's achievements in this battle alone were only surpassed by the [[Operation: FIRST STRIKE|destruction]] of the ''[[Unyielding Hierophant]]'' and almost 500 warships by the UNSC AI [[Cortana]], where she initiated an overload of its 512 fusion reactors. July 28, 2543 was declared a day of mourning in the wake of Cole's apparent death. A painting depicting the battle, titled "''[[Admiral Cole's Last Stand]]''" was created, and by [[2552]] it hung on the wall of [[HIGHCOM Facility Bravo-6]] on [[Sydney]], Earth.<ref name="HE"/><ref>'''[[Halo: The Fall of Reach]]''', ''page 100''</ref>

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[[Category:UNSC Victories]]